Adjusting-collar for pan-drivers



S R E V I .R N N Um B w F AR A WL M AC G N I T S U TU D A (No Model.)

No. 420,752. Patented Feb. 4, 1890.

v N PLTERQ, Phulwilmcmphor. Walhinglfln. u. (A

UNITED STATES PATENT .OFrIcE.

THEODORE A. WASHBURN, OF- GOLD HILL, NEVADA.

ADJUSTING-COLLAR FOR PAN-DRIVERS.

SPECIFICATION forming part of Letters Patent No. 420,752, dated February4, 1890.

Application filed October 13, 1889. Serial No. 327,437- (No model.)

To all? whom it may concern.-

Be it known that I, THEODORE A. WASH- BURN, a citizen of the UnitedStates, residing at Gold Hill, Story county, State of Nevada, haveinvented an Improvement in Adj usting- Collars for Pan-Drivers; and Ihereby declare the following to be a full, clear, and exact descriptionof the same.

My invention relates to the general class of mining machinery, andespecially to that subclass in which a pan is employed and in which amuller is rotated by a driver mounted on a central power-shaft, saidsub-class including pan-amalgamators, settlers, crushers, pulverizers,850.

My invention consists in the novel collar encircling the shaft andcarried by the driver, as will hereinafter be fully described, andspecifically pointed out in the claim.

The object of theinvention will be made clear in the course of thespecification.

Referring to the accompanying drawings for a more complete eXplantion ofmy invention, Figure 1 is a vertical section of apan or settler, showingthe application of my adj usting-collar. Fig. 2 is a cross-section online X X of Fig. 1. l

A is the pan with cone-center a, B the muller, C the driver, D thedriver-cap, E the adjusting-screws, F the driver-shaft feathered in thedriver, and G the power gearing and shafting below, all of these partsbeing those of the usual pan or settler.

H is my collar, consisting of a metal ring having a groove h in itsperiphery. The collar is featherwayed on the shaft F, so that it willslide up and down on the shaft as the drivers often swing from the veryfirst, even though they are bored to fit closely to the shaft. They getworse by use until the shoes of the inuller will be worn out on oneside, while those on the opposite side will not be more than half worn.WVhen a pan is thus faulty, it will not do good Work, and there is alsoa great waste of iron; but by the use of my adjusting-collar the driveris held true to the shaft and will not swing out of its course. Thecollar, being a separate piece, can be readily renewed when necessary.

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent, is

The combination of the drive -shaft, the muller-driver featherwayed onsaid shaft, the

separate collar within the muller-driver and featherwayed on thedrive-shaft, and the setscrews passing through the muller-driver andengaging the collar, whereby driver and collar move up and downtogether, substantially as herein described.

In witness whereof I have hereunto set my hand.

THEODORE A. IVASHBURN.

WVitnesses:

P. KEWIN, R. E. LEONARD.

